Lubricating ststem



ln operation, the lubricant lows 'through the supply pipe 2l under pressure und from the branchv 22 thereof is led into the peripheral groove 10' of the upper shackle bolt l0. From the peripheral groove l0 a part of the lubricant is distributed over the surface ol the upper shackle bolt and over the contacting surfaces ofedjucent relatively movable parte and the remainder of the lubricant 'llows through the radial bore 10b, asiel bore lOa'end pipe connection 2e? into the axial bore lla of the lower shackle bolt and thence through the radial bore 1lb thereof into the peripheral. groove 11 froni'whence it .is die` tributed over the contactingr surfaces of the adjacent relatively incivuble pur-ts. ln this manner u ihn oli' oil .is ineinteii'ied between all ol' the relatively increible pui-is thus greatly reducing weer, eliminating noises und insuring smooth, eren and easy action.

l claim:

1. ln lubricating` system, e shackle connection including :in upper sheclrle bolt und ai lower sheclrle bolt7 euch of seid shuckle bolts having an uxiul and u. radial bore cornu municating with each other und a longitudinal groove in its periphery conimuiiiceting with therudiel bore, means for supplying lubricant-to the `ierii'iherel groove of 'the upper shackle bof' in such manner that e portion of the lubricant l'is utilized to lubricate the upper shackle bolt and another portion of the lubricant conveyed to the and radial bores of the upper shackle bolt, end a pipe having threaded connection with the ends of the shackle bolts and haring direct, free and open communica-tion Tvith the :iial bores of seid ""(iolrlebolt for con-- veying the lubricant iron" the ariel bore or" the upper shackle-.bolt directly to the axial bore 'of the .lower shackle bolt.

2. 'ln u lubricating system,I :i sli le connection including en upper slnicl bolt, n lower 'shackle bolt and links connecting said -shuckle bolts, euch of seid shackle bolts huving un :ixiul bore and redis] bore corninuniceting with eech other end e peripheral groove communicating with the radial bore, and means for supplying lubricant to seid shackle bolts including :t sleeve arranged on seid upper sbuclrle bolt, e lubricant supply pipe lieving branch connected to and extending through seid sleeve and cornmuni-- eating with the peripherel grooveol said upper shackle bolt Wiiereby lubricant is supplied to the upper shackle bolt and to the hores thereof and pipe having direct threaded connection with the ends oi? the upper and lower shackle bolts and ellording free open enddirect connection between the axial bores thereof whereby the lubricant is conveyed from the upper shackle bolt to the lower shackle bolt.

.lu u lubricating system, in combination with the chassis including a channel member and spring, u, shackle connection including en upper shziclrle bolt mounted on the channel meinbeig zi. lov/er slieclrle bolt engaged with the spring and links having pivotal con` nection with seid shackle boltsi euch of seid sheclrle bolts he ving un uniud bore and L rediel bore communicating therewith and 'e peripheral groove, communicating with the radial here, ineens for supplying lubricant to seid shackle bolts incl riding e sleeve arranged on 'the upper shackle bolt, e lubriczin"v supply pipe disposed in the channel member of the chassis und having a, branch connected to and extending through suie sleevey und communicuring with the peripheral groove of said upper shackle bolt whereby Suid upper sheclrle bolt und its bore are supplied with lubrfcunt, sind :i pipe having tlireeded connections et its ends with the shackle bolts and directly communicating with the axial thereof so as to afford free open and direct communication between "the axial bores of the upper sind lower shackle bolts whereby the lubricant is supplied, to the 'lower sluiclrle bolt from said upper shackle Ferienort n. ensures 'y Sil 

